4243221214243 has 16 divisors (see below), whose sum is σ = 4766297309280. Its totient is φ = 3743569267200.

The previous prime is 4243221214189. The next prime is 4243221214259. The reversal of 4243221214243 is 3424121223424.

It is a cyclic number.

It is not a de Polignac number, because 4243221214243 - 2²⁵ = 4243187659811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4243221214199 and 4243221214208.

It is not an unprimeable number, because it can be changed into a prime (4243221214943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13242198 + ... + 13558843.

It is an arithmetic number, because the mean of its divisors is an integer number (297893581830).

Almost surely, 2^{4243221214243} is an apocalyptic number.

4243221214243 is a deficient number, since it is larger than the sum of its proper divisors (523076095037).

4243221214243 is a wasteful number, since it uses less digits than its factorization.

4243221214243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26801478.

The product of its digits is 73728, while the sum is 34.

Adding to 4243221214243 its reverse (3424121223424), we get a palindrome (7667342437667).

The spelling of 4243221214243 in words is "four trillion, two hundred forty-three billion, two hundred twenty-one million, two hundred fourteen thousand, two hundred forty-three".